# Macros and environments that rely on the distinction between space and newline

In most cases, TeX does not distinguish between spaces and newlines. However, inside some macros and environments this distinction matters a lot. Time for a big list? Please edit the CW answer.

This occurred when pondering about Forward-inverse search using SyncTeX with the precison of a single word; this "expert knowledge" is however also relevant for any tool that tries to preprocess (La)TeX code, such as latexdiff.

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As everyone can define its own verbatim-like environment e.g. with the help of fancyvrb or listings I don't see how you should ever been able to get a complete list. –  Ulrike Fischer Jun 14 '12 at 14:58
@UlrikeFischer: Yes, indeed this adds even more complexity. But still not impossible, just makes the list bigger and... dynamic :-) –  krlmlr Jun 14 '12 at 22:08

# Environments

• verbatim

• lstlisting, plus custom environments defined through \lstnewenvironment  (listings package)

• Verbatim, plus custom environments defined through \DefineVerbatimEnvironment (fancyvrb package)

# Commands

• \index

• \verb

• \obeylines

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